From among the following, which material is insoluble in water?

From among the following, which material is insoluble in water?

مندرجہ ذیل میں سے کون سا مواد پانی میں ناقابل حل ہے؟
Explanation
  • Sand does not dissolve in water.
  • Unlike sugar, glucose, and salt, which are all soluble in water.